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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.33 by pippijn, Sat Jan 6 14:42:31 2007 UTC vs.
Revision 1.62 by root, Mon Oct 12 14:00:59 2009 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 3 *
4 Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001,2007 Mark Wedel
6 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 7 *
8 This program is free software; you can redistribute it and/or modify 8 * Deliantra is free software: you can redistribute it and/or modify it under
9 it under the terms of the GNU General Public License as published by 9 * the terms of the Affero GNU General Public License as published by the
10 the Free Software Foundation; either version 2 of the License, or 10 * Free Software Foundation, either version 3 of the License, or (at your
11 (at your option) any later version. 11 * option) any later version.
12 12 *
13 This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details. 16 * GNU General Public License for more details.
17 17 *
18 You should have received a copy of the GNU General Public License 18 * You should have received a copy of the Affero GNU General Public License
19 along with this program; if not, write to the Free Software 19 * and the GNU General Public License along with this program. If not, see
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
21 21 *
22 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The authors can be reached via e-mail to <support@deliantra.net>
23*/ 23 */
24 24
25/** 25/**
26 * \file 26 * \file
27 * Socket general functions 27 * Socket general functions
28 * 28 *
… …
46#include <unistd.h> 46#include <unistd.h>
47#include <arpa/inet.h> 47#include <arpa/inet.h>
48 48
49#include <algorithm> 49#include <algorithm>
50 50
51// use relatively small values, as we do not expect to receive much,
52// and we do userspace write buffering
53// 8kb limits throughput to roughly 66kb/s
54#define SOCKET_RCVBUF 8192
55#define SOCKET_SNDBUF 16384
56
51sockvec clients; 57sockvec clients;
52 58
53/** 59/**
54 * Initializes a connection. Really, it just sets up the data structure, 60 * Initializes a connection. Really, it just sets up the data structure,
55 * socket setup is handled elsewhere. We do send a version to the 61 * socket setup is handled elsewhere. We do send a version to the
56 * client. 62 * client.
57 */ 63 */
58client::client (int fd, const char *peername) 64client::client (int fd, const char *peername)
59: fd (fd), host (strdup (peername)), 65: fd (fd), host (strdup (peername)),
60 socket_ev (this, &client::socket_cb), 66 socket_ev (this, &client::socket_cb)
61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
63{ 67{
68 refcnt_inc (); // the socket is an external reference
69
70 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
71
72 socket_timeout = 16.;
73
64 { 74 {
65 struct linger linger_opt; 75 struct linger linger_opt;
66 76
67 linger_opt.l_onoff = 0; 77 linger_opt.l_onoff = 0;
68 linger_opt.l_linger = 0; 78 linger_opt.l_linger = 0;
69 79
70 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 80 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
71 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 81 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
72 } 82 }
73 83
74 { 84 {
85 int val;
86
87#ifdef SO_RCVBUF
88 val = SOCKET_RCVBUF;
89 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
90 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
91#endif
92
93#ifdef SO_SNDBUF
94 val = SOCKET_SNDBUF;
95 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
96 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
97#endif
98
99#ifdef IP_TOS
75 int val = IPTOS_LOWDELAY; 100 val = IPTOS_LOWDELAY;
76
77 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 101 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
78 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 102 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
79 } 103#endif
80 104
81 { 105#ifdef TCP_NODELAY
82 int val = 1; 106 val = 1;
83
84 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 107 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
85 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 108 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
109#endif
110
111 // set some very aggressive keepalive parameters
112#ifdef TCP_KEEPIDLE
113 val = 1;
114 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
115 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
116#endif
117
118#ifdef TCP_KEEPCNT
119 val = 3;
120 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
121 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
122#endif
123
124#ifdef TCP_KEEPINTVL
125 val = 1;
126 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
127 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
128#endif
129
130 // try to find the mss value in use
131#ifdef TCP_MAXSEG
132 socklen_t sl = sizeof (val);
133 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
134 mss = val;
135#endif
86 } 136 }
87 137
88#ifdef __linux__
89 {
90 int val;
91
92 // set some very aggressive keepalive parameters
93 val = 10;
94 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
95 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
96
97 val = 5;
98 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
99 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
100
101 val = 1;
102 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
103 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
104 }
105#endif
106
107 {
108 int bufsize = 65535; /*Supposed absolute upper limit */
109 int oldbufsize;
110 int buflen = sizeof (int);
111
112 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 138 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
113 LOG (llevError, "InitConnection: Error on fcntl.\n"); 139 LOG (llevError, "InitConnection: Error on fcntl.\n");
114
115 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
116 oldbufsize = 0;
117
118 if (oldbufsize < bufsize)
119 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
120 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
121
122 buflen = sizeof (oldbufsize);
123 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
124 }
125 140
126 state = ST_SETUP; 141 state = ST_SETUP;
127 mapmode = Map0Cmd; 142 mapmode = Map1aCmd;
128 darkness = 1;
129 mapx = 11; 143 mapx = 11;
130 mapy = 11; 144 mapy = 11;
131 itemcmd = 1; /* Default is version item1 command */ 145 itemcmd = 1; /* Default is version item1 command */
132 146 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
133 faces_sent = salloc0<uint8> (nrofpixmaps);
134 147
135 /* Do this so we don't send a face command for the client for 148 /* Do this so we don't send a face command for the client for
136 * this face. Face 0 is sent to the client to say clear 149 * this face. Face 0 is sent to the client to say clear
137 * face information. 150 * face information.
138 */ 151 */
139 faces_sent[0] = NS_FACESENT_FACE; 152 faces_sent[0] = true;
153 fx_want [FT_FACE] = true; // all clients must support image faces
140 154
141 // socket I/O is low priority 155 socket_ev.set (fd, EV_READ);
142 // we prefer to have the server run instead of handling client requests 156 socket_ev.prio (2); // one higher than the ticker priority
143 socket_ev.prio (PE_PRIO_NORMAL + 1);
144 socket_ev.fd (fd); 157 socket_ev.start ();
145 socket_ev.poll (PE_R);
146
147 // command handling is even lower priority
148 // that way no client can monopolise the server
149 cmd_ev.prio (PE_PRIO_NORMAL + 2);
150 158
151 // initialisation done, kick it! 159 // initialisation done, kick it!
152 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 160 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
153 flush (); 161 flush ();
154 162
155 // clients are externally referenced by the socket 163 reset_stats ();
156 refcnt_inc ();
157 clients.push_back (this);
158 164
159#if 0//TODO 165 clients.insert (this);
160 socket_info.nconns++;
161 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
162 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
163#endif
164} 166}
165 167
166client::~client () 168client::~client ()
167{ 169{
168 sockvec::iterator i = find (clients.begin (), clients.end (), this);
169 if (i != clients.end ())
170 clients.erase (i); 170 clients.erase (this);
171 171
172 sfree<uint8> (faces_sent, nrofpixmaps); 172 mapinfo_queue_clear ();
173 free (stats.range); 173 free (stats.range);
174 free (stats.title); 174 free (stats.title);
175 free (host); 175 free (host);
176} 176}
177 177
… …
182 182
183 if (pl) 183 if (pl)
184 pl->disconnect (); 184 pl->disconnect ();
185 185
186 if (fd >= 0) 186 if (fd >= 0)
187 {
188 send_packet ("goodbye");
189 flush ();
190
187 close (fd); 191 close (fd);
192 }
188 193
189 state = ST_DEAD; 194 state = ST_DEAD;
190 195
191 socket_ev.suspend (); 196 socket_ev.stop ();
192 cmd_ev.suspend ();
193 197
194 // socket now longer references us 198 refcnt_dec (); // socket no longer open
195 refcnt_dec ();
196} 199}
197 200
198/** This sets up the socket and reads all the image information into memory. */
199void 201void
200init_ericserver (void) 202client::reset_stats ()
201{ 203{
202 cst_tot.time_start = time (NULL); 204 /* we need to clear these to -1 and not zero - otherwise,
203 cst_lst.time_start = time (NULL); 205 * if a player quits and starts a new character, we wont
206 * send new values to the client, as things like exp start
207 * at zero.
208 */
209 for (int i = 0; i < NUM_SKILLS; i++)
210 last_skill_exp[i] = -1;
204 211
205 LOG (llevDebug, "Initialize new client/server data\n"); 212 for (int i = 0; i < NROFATTACKS; i++)
213 last_resist[i] = -1;
206 214
207 read_client_images (); 215 last_weapon_sp = -1;
208} 216 last_level = -1;
217 last_stats.exp = -1;
218 last_flags = 0;
219 last_weight = -1;
220 last_weight_limit = 0;
221 last_path_attuned = 0;
222 last_path_repelled = 0;
223 last_path_denied = 0;
224 last_speed = 0;
225 last_flags = 0;
209 226
210 227 static living zero_living;
211/******************************************************************************* 228 last_stats = zero_living;
212 *
213 * Start of functions dealing with freeing of the data.
214 *
215 ******************************************************************************/
216
217/** Free's all the memory that ericserver allocates. */
218void
219free_all_newserver (void)
220{
221 LOG (llevDebug, "Freeing all new client/server information.\n");
222 free_socket_images ();
223} 229}
224 230
225client * 231client *
226client::create (int fd, const char *peername) 232client::create (int fd, const char *peername)
227{ 233{
228 if (checkbanned (NULL, peername))
229 {
230 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
231 return 0;
232 }
233 else
234 {
235 client *ns = new client (dup (fd), peername); 234 client *ns = new client (dup (fd), peername);
236
237 ns->instantiate (); // effectively a nop right now 235 ns->instantiate (); // effectively a nop right now
238
239 INVOKE_CLIENT (CONNECT, ns); 236 INVOKE_CLIENT (CONNECT, ns);
240
241 return ns; 237 return ns;
242 }
243} 238}
244 239

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